A half inch wide black line prints in the center on the back side of the paper. I have performed interior and bottom plate cleaning per canon's instructions.Bottom plate cleaning several times removes the line for the most part but it reappears after printing about 20-25 pages. Please help.
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If you have a Brother color mfc, it sure sounds like a defective cartridge.
Brother machines do not perform well with generic or rebuilt cartridges and really have problems when you mix generic with Brother toners. It also voids any remaining warranty. Send it back. Good Luck.
The first thing to do with black line is to clean the glass, Look where the paper goes in, lift the part above the paper and clean the glass with alcohol, the glass will be on the same side as the printed side of the paper. Good luck.
This sounds as if you have some ink/contamination on the small scaning glass that sits to either the left or right of the main glass on the copier.(Depending on the model/make)As your original is scanned over this thin piece of glass the scanning device will see any spots and this will result in a black line down the page.Please clean the glass with a soft rag.
make sure the glass is clean it sounds like you either have a dirty scan glass or the wires need to be cleaned there should be a cleaner on the front cover of the macin that you you pull out and slide back abd fourth to clean it
You have a build up of ink inside the printer. I had a Canon that did this. I had to take the ink & print head out, and tear a paper towel strip 1 " wide and 13" long or however long the paper towel is. I folded it in half down the length so it was 1/2x13. Then used a plastic strip to shove it under the part the print head sits in. Once I got the towel to the other side, I grabbed it with my hand. I removed the plastic strip used to shove the paper towel under. So now the paper towel sticks out both sides underneath the print head cradle. I gently pull the paper towel back and forth so the paper towel can clean off the ink build up. Hope this helps.
it is not directly coming from the head. Probably you are printing your photos without borders. This means that the printer prints slightly beyond he paper. As a consequence is sprays ink on the mechanics and after a while it starts to smear on the back of the paper.
This phenomenon is even mentioned in the printer manual (kind of caution when selecting borderless printing).
There is a menu item in the printer utilities that lets you clean the printer mechanics with a folded paper. I tried this, but it helps only little.
I have the same effect on a pixma IP 4500 , and I live with it.